Organization of Cells in Living Things – Ch. 7-3

Unicellular vs. multicellular Uni = one celled organism Examples: bacteria, protozoa, many algae and some fungi. Multi = many celled organism Examples: humans, cats, dogs, plants, and spiders.

Tissues Groups of cells organized for a specific function. Examples: epithelial, connective, adipose, bone, cartilage, blood, nerve, and muscle.

Epithelial Tissue Cover the body surfaces and line cavities and organs. Examples: skin and glands.

Connective Tissues Support and bind tissues and organs together Examples: bone, tendons, and ligaments. Tendons = muscle to bone Ligaments = bone to bone

Muscle Tissues Specialized for contraction and shortening. 3 types Smooth = stomach, intestine, blood Skeletal = attach to bones for movement Cardiac = heart

Organ vs. Organ Systems Organ = groups of tissues together Organ System = groups of organs together (Ex. Shoot System – plants)